SDR AALA202210245045

Service difficulty report · Connector · Boeing 737

Difficulty date: October 22, 2022
Submitted: October 25, 2022
Operation: Air carrier
Aircraft: N881NN
Make and model: Boeing 737
Aircraft serial: 31135
Aircraft time: 32,478 hours, 13,639 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Connector
Condition: Backed Out
Location: Zone 600 - Rh Wi
Stage of operation: DE
How discovered: V
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: FLAPS WOULD NOT EXTEND ON DESCENT INTO CLT. ASYMMETRY NOTED. EMERGENCY WAS DECLARED. RAN QUICK REFERENCE HANDBOOK PROCEDURE AND LANDED FLAPS UP AND SLATS EXTENDED. 177 KNOTS. NORMAL TOUCHDOWN. TROUBLESHOT PER FIM 27-59-00-810-807. WHILE INSPECTING WIRING FROM FLAP SLAT ELECTRONIC UNIT TO NUMBER 7 FLAP SKEW SENSOR, FOUND CONNECTOR D40034P BACKED OFF MULTIPLE THREADS. CLEANED AND INSPECTED AND RESEATED CONNECTOR. OPERATIONS TEST GOOD.